> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/analytics-alerts/alerts-by-name/massive-file-downloads-from-saas-service.md).
# Massive file downloads from SaaS service
### Synopsis
| Field | Value |
| -------------------- | --------------------------------------------------------------------------------------------------------------------------------- |
| Activation Period | 14 Days |
| Training Period | 30 Days |
| Test Period | 1 Hour |
| Deduplication Period | 1 Day |
| Required Data | Requires one of the following data sources:
Box Audit Log OR DropBox OR Google Workspace Audit Logs OR Office 365 Audit
|
| Detection Modules | Identity Threat Module, Email |
| Detector Tags | Data Detection & Response |
| ATT\&CK Tactic | Collection (TA0009) |
| ATT\&CK Technique | Data from Cloud Storage (T1530) |
| Severity | Informational |
### Description
A user downloaded a large volume of files from an organizational SaaS service, either exceeding the normal file count or size for the user's typical behavior.
### Attacker's Goals
An attacker may download files from a SaaS service to exfiltrate sensitive data.
### Investigative actions
* Check for signs of account compromise, such as abnormal login activity or unusual behavior.
* Review the files that were downloaded to determine if they contain sensitive data.
* Verify if the user account that downloaded the files is authorized to access them.
* Analyze the file types that were downloaded.
* Monitor the account for any further suspicious actions.
### Variations
Suspicious SaaS service file downloads
**Synopsis**
| Field | Value |
| ----------------- | ------------------------------- |
| ATT\&CK Tactic | Collection (TA0009) |
| ATT\&CK Technique | Data from Cloud Storage (T1530) |
| Severity | Low |
**Description**
A user downloaded a large volume of files from an organizational SaaS service, either exceeding the normal file count or size for the user's typical behavior. The user connected from an unknown IP and displayed suspicious characteristics.
**Attacker's Goals**
An attacker may download files from a SaaS service to exfiltrate sensitive data.
**Investigative actions**
* Check for signs of account compromise, such as abnormal login activity or unusual behavior.
* Review the files that were downloaded to determine if they contain sensitive data.
* Verify if the user account that downloaded the files is authorized to access them.
* Analyze the file types that were downloaded.
* Monitor the account for any further suspicious actions.
Massive file downloads from SaaS service by terminated user
**Synopsis**
| Field | Value |
| ----------------- | ------------------------------- |
| ATT\&CK Tactic | Collection (TA0009) |
| ATT\&CK Technique | Data from Cloud Storage (T1530) |
| Severity | Low |
**Description**
A user downloaded a large volume of files from an organizational SaaS service, either exceeding the normal file count or size for the user's typical behavior.
**Attacker's Goals**
An attacker may download files from a SaaS service to exfiltrate sensitive data.
**Investigative actions**
* Check for signs of account compromise, such as abnormal login activity or unusual behavior.
* Review the files that were downloaded to determine if they contain sensitive data.
* Verify if the user account that downloaded the files is authorized to access them.
* Analyze the file types that were downloaded.
* Monitor the account for any further suspicious actions.
Massive code file downloads from SaaS service
**Synopsis**
| Field | Value |
| ----------------- | ------------------------------- |
| ATT\&CK Tactic | Collection (TA0009) |
| ATT\&CK Technique | Data from Cloud Storage (T1530) |
| Severity | Low |
**Description**
A user downloaded a large volume of files from an organizational SaaS service, either exceeding the normal file count or size for the user's typical behavior.
**Attacker's Goals**
An attacker may download files from a SaaS service to exfiltrate sensitive data.
**Investigative actions**
* Check for signs of account compromise, such as abnormal login activity or unusual behavior.
* Review the files that were downloaded to determine if they contain sensitive data.
* Verify if the user account that downloaded the files is authorized to access them.
* Analyze the file types that were downloaded.
* Monitor the account for any further suspicious actions.
---
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